Static Watt Compensator and Battery Energy Storage System for Frequency Stability Considering Smelter: A Comparison

2020 IEEE International Conference on Power and Energy (PECon) Pub Date : 2020-12-07 DOI:10.1109/PECon48942.2020.9314465

Amirah Ayu Mudhiah Fahren, K. M. Banjar-Nahor, Claysius Dewanata Widjaja, N. Hariyanto

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引用次数: 1

Abstract

The regulation of Indonesian Minister of Energy and Mineral Resources No. 4 of 2009 encourages many mining and mineral companies in Indonesia to build smelters. Electric arc furnaces used in the smelting process are non-linear loads that consume large amounts of power and change very quickly over time. The characteristics of electric arc furnaces that fluctuate rapidly may cause several problems such as system frequency instability. To compensate the intermittency of an electric arc furnace, a Static Watt Compensator (SWC) or Battery Energy Storage System (BESS) can be used. This paper discusses the comparison between the Static Watt Compensator and Battery Energy Storage System in terms of performance, sizing, and cost. The modeling and the simulation will be carried out with DIgSILENT PowerFactory, a power system analysis software. The performance of SWC and BESS will be compared by using the Integral Square Error (ISE) method. The results show that SWC maintains system frequency by absorbing active power and can only overcome the system's over-frequency condition, whereas BESS maintains system frequency by supplying or absorbing active power so that it can overcome both over-frequency and under-frequency conditions. However, the use of SWC increases system losses, which causes the total cost of SWC slightly higher than BESS.

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考虑冶炼厂频率稳定性的静态瓦特补偿器与电池储能系统的比较

印度尼西亚能源和矿产资源部2009年第4号条例鼓励印度尼西亚的许多采矿和矿产公司建设冶炼厂。在熔炼过程中使用的电弧炉是非线性负载，它消耗大量的电力，并且随着时间的推移变化非常快。电弧炉快速波动的特性可能导致系统频率不稳定等问题。为了补偿电弧炉的间歇性，可以使用静态瓦特补偿器(SWC)或电池储能系统(BESS)。本文讨论了静态瓦特补偿器与蓄电池储能系统在性能、尺寸和成本等方面的比较。利用电力系统分析软件DIgSILENT PowerFactory进行建模和仿真。采用积分平方误差(ISE)方法对SWC和BESS的性能进行比较。结果表明，SWC通过吸收有功功率维持系统频率，只能克服系统的过频情况，而BESS通过提供或吸收有功功率维持系统频率，可以同时克服过频和过频情况。但是，SWC的使用增加了系统损耗，这使得SWC的总成本略高于BESS。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2020 IEEE International Conference on Power and Energy (PECon)

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